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Contents

README

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KY3415B

KY · MOSFETs · SOT-23

KY3415B from KY, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GATE input Gate terminal of the P-channel MOSFET, rated for a gate-source voltage VGSS of ±10 V with a gate threshold of -0.4 V to -1.0 V.
2 SOURCE passive Source terminal of the P-channel MOSFET; the datasheet gives no separate pin-specific limit for this pin.
3 DRAIN passive Drain terminal of the P-channel MOSFET, rated for a drain-source voltage VDSS of -20 V and continuous drain current of -4 A at TC = 25℃.

Key specifications

Parameter Value
Manufacturer KY
Package SOT-23
Category Transistors/Thyristors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Drain-Source Voltage VDSS -20 V 1
Gate-Source Voltage VGSS -10 10 V 1
Continuous Drain Current ID -4 A TC = 25℃ 1
Continuous Drain Current ID -2.6 A TC = 100℃ 1
Pulsed Drain Current IDM -20 A note1 1
Power Dissipation PD 1.67 W TA = 25℃ 1
Thermal Resistance, Junction to Ambient RθJA 75 ℃/W 1
Operating and Storage Temperature Range TJ, TSTG -55 150 ℃ 1
Drain-Source Breakdown Voltage V(BR)DSS -20 V VGS=0V, ID=-250μA 2
Zero Gate Voltage Drain Current IDSS -1 μA VDS = -20V, VGS = 0V 2
Gate to Body Leakage Current IGSS -10 10 μA VDS =0V, VGS = ±8V 2
Gate Threshold Voltage VGS(th) -0.4 -1 V VDS= VGS, ID= -250μA 2
Static Drain-Source on-Resistance RDS(on) 38 45 mΩ VGS =-4.5V, ID =-4A 2
Static Drain-Source on-Resistance RDS(on) 48 60 mΩ VGS =-2.5V, ID =-3A 2
Forward Transconductance gFS 8 S VDS =-5V, ID = -4A 2
Maximum Continuous Drain to Source Diode Forward Current IS -4 A 2
Maximum Pulsed Drain to Source Diode Forward Current ISM -20 A 2
Drain to Source Diode Forward Voltage VSD -1.2 V VGS = 0V, IS = -4A 2

CAD (KiCad official)

  • Symbol: KY3415B
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ky3415b-etched.step / ky3415b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ky3415b.step / ky3415b.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: KY datasheet (5 pp, sha256 e7f2d588afbea213, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF